Required run rate (RRR) equals runs needed divided by overs remaining. If a team needs 81 runs in 10 overs, the required rate is 8.10 per over. Overs are counted in decimal format where 10.3 overs means 10 overs and 3 balls (10.5 in decimal).
- Formula: RRR = Runs Needed / Overs Remaining
- Target = Team 1 Score + 1 (must score more to win)
- Overs conversion: 10.3 overs = 10 + 3/6 = 10.5 decimal overs
- RRR above 12 is very difficult even in T20 cricket
- RRR above 8 in ODI cricket is historically chased only 15% of the time
| Required RR | Difficulty | T20 Chase % | ODI Chase % |
|---|---|---|---|
| Below 6.0 | Easy | 85%+ | 75%+ |
| 6.0-8.0 | Moderate | 65-75% | 40-55% |
| 8.0-10.0 | Challenging | 40-55% | 15-25% |
| 10.0-12.0 | Very difficult | 20-35% | 5-10% |
| 12.0+ | Nearly impossible | <15% | <3% |
